网球是一项心理游戏。每个人都很健康,每个人都能打出精彩的击球。
"Tennis is a mental game. Everyone is fit, everyone hits great shots."
The problem of quality management is not what people don't know about it. The problem is what they think they do know.
数学的目标是理解我们观察到的现象背后的结构。
一幅画必须被立刻理解,作为一个整体,就像一首音乐或一首诗。